CN209832879U - Printing plate for plate cylinder and convenient for color register and plate correction - Google Patents
Printing plate for plate cylinder and convenient for color register and plate correction Download PDFInfo
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- CN209832879U CN209832879U CN201822126357.0U CN201822126357U CN209832879U CN 209832879 U CN209832879 U CN 209832879U CN 201822126357 U CN201822126357 U CN 201822126357U CN 209832879 U CN209832879 U CN 209832879U
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Abstract
The utility model provides a printing plate that is used for forme cylinder and is convenient for chromatography plate checking, this printing plate includes the picture and text page of a whole page, the leading edge, the trailing edge is with controlling the side edge, the inboard blank department at left side or right side edge of printing plate is provided with the scale along the length direction of printing plate, this scale is provided with the position value of each printing plate that obtains according to the calculation of the girth ratio of last one color impression point to the line length of next one color impression point and forme cylinder, 0 scale correspondence is the start print point of first color forme, the scale interval that other position values were located is that first color forme start print point and follow-up each color forme start print the position difference between the point. The utility model discloses a printing forme, simple structure can shorten the time of proofreading of just chromatography, need not shut down when proofreading the version moreover, has reduced the risk of dry version, is particularly suitable for the forme cylinder of polychrome chromatography technology to use.
Description
Technical Field
The present invention relates to printing apparatus, and more particularly to a printing plate for use on a plate cylinder of a printing apparatus, and more particularly to a printing plate for use on a plate cylinder that facilitates color register correction.
Background
A rotary press for printing on a printing plate by bringing an impression cylinder and a plate cylinder into contact with each other without stopping, the plate cylinder including a printing plate including a leading edge and a trailing edge parallel to the axis of the cylinder and a side edge extending circumferentially and axially of the plate cylinder, a clamp mechanism and the cylinder. The printing plate is detachably fixed on the cylinder, and when the printing plate is installed, the starting point position of the printing plate is determined, and then the front edge and the rear edge of the printing plate are fixed in the plate clamping mechanism, so that the printing plate and the surface of the cylinder are in a relatively static state.
At present, color printing is mainly realized by a multicolor overprinting mode, namely, monochromatic printing plates with different screen angles are manufactured after color separation of an original, and are sequentially overlapped and overprinted according to the color sequence of the printing plates, and finally, a printed product with the same level and color tone as the original is obtained by printing. Overprinting requires that after a previous color is printed, the next color can be accurately superimposed on the previous color when the next color is printed. As shown in fig. 1, since a certain distance is provided between two adjacent color press units, and after passing through a previous color press point, a paper sheet can reach a next color press point only by passing through a plurality of guide rollers and adjusting rollers, if a line length from the previous color press point to the next color press point is an integral multiple of a circumference of a plate cylinder, a print starting point of each single color plate should be at the same position, but the actual production is not the case, and usually, the circumference of the plate cylinder is fixed, and the line length from the previous color press point to the next color press point is changed, so that the print starting point of each color plate has a certain position difference. The method comprises the steps of aligning an arrow transverse line on a printing plate to a link gear key slot position of a roller by using an auxiliary calibration frame, performing inking printing firstly during primary overprinting, stopping to measure overprinting errors of each color, stopping to rotate the printing plate, loosening a link gear, moving the printing plate according to error length, starting up after completion and performing fine adjustment on the overprinting errors by using an overprinting system. This operation requires a machine halt, is troublesome, wastes paper, and involves the risk of plate drying due to the need to stop the plate.
Disclosure of Invention
To solve the above problems, it is an object of the present invention to provide a printing plate for a plate cylinder that facilitates register calibration.
In order to realize above purpose, the utility model discloses a printing plate that is used for forme cylinder and is convenient for chromatography correction version, including the picture and text space of a whole page, leading edge, trailing edge and control the side edge, its characterized in that: and a scale is arranged at the inner blank of the left side or the right side edge of the printing plate along the length direction of the printing plate, the scale is provided with a position value of each printing plate obtained by calculating the ratio of the length of a line from an upper color impression point to a lower color impression point to the circumference of the printing plate cylinder, 0 scale corresponds to a starting point of the first color printing plate, and the scale values of other position values are the position difference value between the starting point of the first color printing plate and the starting point of the subsequent color printing plates.
In order to show the impression starting point of each monochromatic impression unit more clearly, the position value corresponding to each color printing plate on the scale is a bold line which is subjected to thickening processing and marks the color printed by the printing plate.
The ruler on the printing plate is formed by an engraving process.
The utility model discloses a printing plate, the length direction that adopts blank department at printing plate left side or right side edge to follow the printing plate sets up the scale, and be provided with the position value of the line length that gets to next color impression point according to last color impression point on the scale and the printing plate girth ratio calculation of printing plate, when 0 scale is established to the play seal point of first color printing plate, the difference in position between other each color printing plate and the first color printing plate is just surveyability, because the position of scraper is fixed, only need align the scraper blade point with the position value that this printing plate belongs to when installing the version, recycle overprinting system and carry out the micro-adjustment to the overprinting error, just can make the accurate overprinting of last color and next color. The utility model discloses a printing forme, simple structure can shorten the time of proofreading of just chromatography, need not shut down when proofreading the version moreover, has reduced the risk of dry version, is particularly suitable for the forme cylinder of polychrome chromatography technology to use.
Drawings
FIG. 1 is a schematic view of the connection structure of single-color embossing units in a multi-color overprinting process.
Fig. 2 is a schematic structural view of the printing plate of the present invention.
FIG. 3 is a schematic view of the structure of the plate cylinder formed after the printing plate of the present invention is mounted.
Detailed Description
As shown in fig. 2, the utility model discloses a printing plate, including picture and text version 1, leading edge 2, trailing edge 3, left side edge 3 and right side edge 4, be equipped with scale 5 along the length direction of printing plate in the blank of left side edge inboard, be provided with on this scale according to the position value of each color printing plate that the ratio calculation of the line length of last one color impression point to next one color impression point and printing plate girth obtained, the scale that this position value is located is the difference in position between first color printing plate and the follow-up each color printing plate, the position value that corresponds to each color printing plate on the scale is the bold line through thickening, this bold line is shown with the colour that the printing plate printed.
Taking a four-color overprinting unit as an example, the overprinting sequence is yellow, red, blue and black respectively, the starting point of the yellow printing plate is set at the 0 scale of the ruler, and the position difference of the red printing plate and the yellow printing plate is d according to the ratio of the line length from the previous color impression point to the next color impression point to the circumference of the printing plate cylinder1The difference in position between the blue and yellow plates is d2The difference in position between the black and yellow plates is d3When d is corresponded to on the scale of each color printing plate1Line of position is bolded and displayed in red, corresponding to d2Lines of positions are bolded and shown in blue, corresponding to d3The lines at the positions are thickened and displayed in black, and when the plate is mounted, as shown in FIG. 3, the yellow printing plate is scaled on a roller 6The scale 0 aligns the scraper blade and carries out the version mounting, analogizes in turn, goes up d on the red printing plate scale1Scale aligning with scraper blade for mounting plate, d on blue printing plate scale2Scale aligning with scraper blade for mounting plate, d on yellow printing plate scale3The scale is aimed at the scraper blade point to carry out plate mounting, and the overprinting system is reused to carry out fine adjustment on overprinting errors, so that the four-color accurate overprinting can be realized.
The above is only the concrete description of an embodiment of the printing plate of the present invention, but this embodiment is not used to limit the protection scope of the present invention, and all the equivalent implementation or change that does not depart from the technical solution of the present invention, such as the change of the scale design on the scale, should be included in the scope of the present invention.
Claims (3)
1. A printing plate for a plate cylinder and facilitating color register correction, comprising an image-text layout, a front edge, a rear edge and left and right side edges, characterized in that: and a scale is arranged at the inner blank of the left side or right side edge of the printing plate along the length direction of the printing plate, the scale is provided with a position value of each printing plate obtained by calculating the ratio of the length of a line from an upper color impression point to a lower color impression point to the circumference of the printing plate cylinder, 0 scale on the scale corresponds to a starting point of the first color printing plate, and scale values of other position values are the position difference value between the starting point of the first color printing plate and the starting point of the subsequent color printing plates.
2. A printing plate for a plate cylinder facilitating process correction according to claim 1, wherein: the position value corresponding to each color printing plate on the scale is a bold line subjected to thickening treatment, and the bold line marks the color printed by the printing plate.
3. Printing forme for a forme cylinder and facilitating colour register according to claim 1 or 2, characterized in that: the scale on the printing plate is formed by an engraving process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822126357.0U CN209832879U (en) | 2018-12-18 | 2018-12-18 | Printing plate for plate cylinder and convenient for color register and plate correction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822126357.0U CN209832879U (en) | 2018-12-18 | 2018-12-18 | Printing plate for plate cylinder and convenient for color register and plate correction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209832879U true CN209832879U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822126357.0U Active CN209832879U (en) | 2018-12-18 | 2018-12-18 | Printing plate for plate cylinder and convenient for color register and plate correction |
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| CN (1) | CN209832879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114002A (en) * | 2019-12-31 | 2020-05-08 | 杭州秉信环保包装有限公司 | Preprinting transverse cutting precision improving method |
-
2018
- 2018-12-18 CN CN201822126357.0U patent/CN209832879U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114002A (en) * | 2019-12-31 | 2020-05-08 | 杭州秉信环保包装有限公司 | Preprinting transverse cutting precision improving method |
| CN111114002B (en) * | 2019-12-31 | 2021-10-19 | 杭州秉信环保包装有限公司 | Preprinting transverse cutting precision improving method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230825 Address after: No. 2700, Changbaishan East Road, Yanji City, Yanbian Korean Autonomous Prefecture, Jilin Province 133000 Patentee after: YANBIAN CHANGBAISHAN PRINTING Co.,Ltd. Address before: 515021 Industrial Zone (Erwei Industrial Zone), north suburb of Jinyuan Industrial City, Chaoshan Road, Shantou City, Guangdong Province, area 4a2-2, area 2m4, area 13-02, block A-F Patentee before: SHANTOU DONGFENG PRINTING Co.,Ltd. Patentee before: YANBIAN CHANGBAISHAN PRINTING Co.,Ltd. |